CVE-2025-1664: The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable

Q: How do I fix CVE-2025-1664?

essential blocks: upgrade to 5.3.2. Exact commands for each OS are on this page.

Q: Is CVE-2025-1664 being exploited?

CVE-2025-1664 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-1664 affect?

CVE-2025-1664 affects essential blocks. Severity is medium (CVSS 6.4). The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Parallax slider in all versions up to, and including, 5.3.1 due to insufficient input sanit

Q: How urgent is CVE-2025-1664?

Priority 26/100. No elevated risk signals yet.

Routine

MEDIUM 6.4UPGRADE

CVE-2025-1664 is a medium-severity flaw (CVSS 6.4) affecting essential blocks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Parallax slider in all versions up to, and including, 5.3.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an i

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-03-08
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: wpdeveloper

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-03-08 12:15 UTCPublished CVE record published
2026-06-17 08:39 UTCUpdated Record last modified

wpdeveloper essential blocks UPGRADE

Affected: < 5.3.2

Fixed in: 5.3.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy essential-blocks || rpm -q essential-blocks || essential-blocks --version

2. UPGRADE to 5.3.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade essential-blocks

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade essential-blocks

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-1664?

essential blocks: upgrade to 5.3.2. Exact commands for each OS are on this page.

Is CVE-2025-1664 being exploited?

CVE-2025-1664 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-1664 affect?

CVE-2025-1664 affects essential blocks. Severity is medium (CVSS 6.4). The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Parallax slider in all versions up to, and including, 5.3.1 due to insufficient input sanit

How urgent is CVE-2025-1664?

Priority 26/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

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CVE-2024-47385 MEDIUM 6.5 UPGRADE Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPDevelo
CVE-2024-13803 MEDIUM 6.4 UPGRADE The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable

References

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